/*
 * Copyright 2002-2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.aop.testfixture.advice;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.HashMap;

/**
 * Abstract superclass for counting advices etc.
 *
 * @author Rod Johnson
 * @author Chris Beams
 * @author Sam Brannen
 */
@SuppressWarnings("serial")
public class MethodCounter implements Serializable {

    /**
     * Method name --> count, does not understand overloading
     */
    private HashMap<String, Integer> map = new HashMap<>();

    private int allCount;

    protected void count(Method m) {
        count(m.getName());
    }

    protected void count(String methodName) {
        map.merge(methodName, 1, (n, m) -> n + 1);
        ++allCount;
    }

    public int getCalls(String methodName) {
        return map.getOrDefault(methodName, 0);
    }

    public int getCalls() {
        return allCount;
    }

    /**
     * A bit simplistic: just wants the same class.
     * Doesn't worry about counts.
     *
     * @see Object#equals(Object)
     */
    @Override
    public boolean equals(Object other) {
        return (other != null && other.getClass() == this.getClass());
    }

    @Override
    public int hashCode() {
        return getClass().hashCode();
    }

}
